CN217211219U

CN217211219U - Tension testing device

Info

Publication number: CN217211219U
Application number: CN202220183427.XU
Authority: CN
Inventors: 裴仔
Original assignee: Guangzhou Jingce Testing Technology Co ltd; Guangzhou Shiyuan Electronics Thecnology Co Ltd
Current assignee: Guangzhou Jingce Testing Technology Co ltd; Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-08-16
Anticipated expiration: 2032-01-21

Abstract

The utility model provides a tensile testing device. The tensile test device includes: the clamping mechanism is provided with a clamping cavity for clamping a workpiece to be tested; a support structure pivotally connected to the clamping mechanism such that the clamping mechanism is rotatably disposed in a vertical plane relative to the support structure; the force application structure is used for applying an acting force to the workpiece to be tested so as to perform tension test on the workpiece to be tested; and the locking structure is connected with or matched with the clamping mechanism, the locking structure is connected with or matched with the supporting structure, and the locking structure is used for locking the clamping mechanism on the supporting structure. The technical scheme of the utility model in, can conveniently adjust the position of the work piece that awaits measuring through the tensile testing device, the operation of being convenient for, labour saving and time saving.

Description

Tension testing device

Technical Field

The utility model relates to a tensile test frock technical field particularly, relates to a tensile test device.

Background

In the prior art, when a workpiece to be tested is subjected to a tensile test, the workpiece to be tested is fixed on a tensile test fixture, the workpiece to be tested is connected with a full-automatic insertion and extraction force tester through a sucker, and the insertion and extraction force tester provides tensile force for testing. In the process of the tensile test, a plurality of (for example, 6 or more than 6) test points are generally required to be taken for testing a workpiece to be tested. Because the relative position between the tensile test fixture and the supporting seat is fixed in the prior art, when the position of a workpiece to be tested needs to be adjusted, the tensile test fixture and the supporting seat need to be moved together as a whole, the operation is inconvenient, and the test consumes time and labor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a tensile testing device can conveniently adjust the position of the work piece that awaits measuring, the operation of being convenient for, labour saving and time saving.

In order to achieve the above object, the utility model provides a tensile testing device, include: the clamping mechanism is provided with a clamping cavity for clamping a workpiece to be tested; a support structure pivotally connected to the clamping mechanism such that the clamping mechanism is rotatably disposed in a vertical plane relative to the support structure; the force application structure is used for applying an acting force to the workpiece to be tested so as to perform tension test on the workpiece to be tested; and the locking structure is connected with or matched with the clamping mechanism, the locking structure is connected with or matched with the supporting structure, and the locking structure is used for locking the clamping mechanism on the supporting structure.

Furthermore, the supporting structure is provided with a strip hole, the strip hole is located on one side of a pivot point between the supporting structure and the clamping mechanism, the strip hole extends around the pivot point, the clamping mechanism is provided with a first threaded hole, the first threaded hole and the strip hole are correspondingly arranged, the locking structure comprises a locking piece in sliding fit with the strip hole, and one end of the locking piece is connected with the first threaded hole in a threaded mode after penetrating out of the strip hole.

Furthermore, the supporting structure is provided with a strip hole, the clamping mechanism is provided with an installation through hole, the installation through hole corresponds to the strip hole, the locking structure comprises a locking piece and an anti-falling piece, and one end of the locking piece is connected with the anti-falling piece after penetrating through the strip hole and the installation through hole.

Further, the clamping mechanism includes: the clamping body is connected with the supporting structure and can be rotatably arranged relative to the supporting structure; the clamping piece is arranged on the clamping body, a clamping cavity is formed by the clamping piece and the clamping body in a surrounding mode, and the clamping piece is movably arranged relative to the clamping body so as to adjust the size of the clamping cavity.

Further, fixture includes a plurality of holders, and a plurality of holders set up on the centre gripping body along predetermineeing the direction interval.

Further, fixture still includes adjusts the structure, adjusts the structure and is connected with the centre gripping body, and the holder is connected with adjusting the structure, adjusts the structure and for the movably setting of centre gripping body to drive the holder and remove.

Furthermore, the adjusting structure comprises an adjusting bolt, a second threaded hole is formed in the clamping body, the adjusting bolt is in threaded connection with the second threaded hole, and the clamping piece is arranged at one end of the adjusting bolt; and/or the clamping mechanism comprises a plurality of clamping pieces and a plurality of adjusting structures, and the plurality of clamping pieces and the plurality of adjusting structures are arranged in a one-to-one correspondence manner.

Further, the tensile force testing device comprises two supporting structures, the two supporting structures are arranged on two opposite sides of the clamping mechanism respectively along the preset direction, and the two supporting structures are connected with the clamping mechanism.

Further, the tensile test device still includes the couple that is used for being connected with the work piece that awaits measuring, and application of force structure includes the weight, and the couple is used for hanging the weight to carry out tensile test to the work piece that awaits measuring.

Furthermore, the tensile test device also comprises a base, wherein the supporting structure is arranged on the base and is connected with the base; and/or the tension testing device further comprises a pivot shaft, and the clamping mechanism is pivotally connected with the supporting structure through the pivot shaft.

Use the technical scheme of the utility model, fixture's centre gripping chamber is used for the centre gripping to await measuring the work piece. The support structure is used for mounting and supporting the clamping mechanism. The force application structure is used for applying acting force to the workpiece to be tested so as to perform tension test on the workpiece to be tested. Because fixture is rotatable in vertical plane for bearing structure, consequently, according to actual need, can adjust fixture for bearing structure's position to can conveniently adjust the position of the work piece that awaits measuring, the operation of being convenient for, labour saving and time saving. The locking structure is used for locking the clamping mechanism on the supporting structure. After the clamping mechanism is adjusted to a proper position, the clamping mechanism and the supporting structure can be locked through the locking structure, so that the clamping mechanism is fixed at a certain position relative to the supporting structure, and the force application structure is convenient to perform tension test on a workpiece to be tested.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a tensile testing apparatus according to the present invention;

FIG. 2 shows an enlarged partial view of the tensile testing apparatus of FIG. 1;

FIG. 3 shows a side view of the tensile testing apparatus of FIG. 1; and

fig. 4 shows a bottom view of the tensile testing apparatus of fig. 1.

Wherein the figures include the following reference numerals:

10. a clamping mechanism; 12. a clamping body; 13. a clamping member; 14. an adjustment structure; 15. adjusting the bolt; 16. a handle; 20. a support structure; 21. a strip hole; 30. a base; 31. a third threaded hole; 32. and (7) installing holes.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is to be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The relative position between the tension test fixture and the supporting seat in the prior art is fixed, so that when the position of a workpiece to be tested needs to be adjusted, the tension test fixture and the supporting seat need to be moved together as a whole, the operation is inconvenient, and the test consumes time and labor.

In order to solve the above problem, the utility model discloses an embodiment provides a tensile testing device.

It should be noted that, in the embodiment of the present invention, the workpiece to be tested is a display screen.

As shown in fig. 1 to 3, in an embodiment of the present invention, the tensile testing apparatus includes a clamping mechanism 10, a supporting structure 20, a force application structure, and a locking structure, wherein the clamping mechanism 10 has a clamping cavity for clamping a workpiece to be tested; the support structure 20 is pivotally connected to the fixture 10 such that the fixture 10 is rotatably disposed in a vertical plane relative to the support structure 20; the force application structure is used for applying an acting force to a workpiece to be tested so as to perform tension test on the workpiece to be tested; a locking structure is connected or engaged with the fixture 10 and with the support structure 20, the locking structure being for locking the fixture 10 to the support structure 20.

In the above arrangement, the clamping cavity of the clamping mechanism 10 is used for clamping the workpiece to be tested. The support structure 20 is used to mount and support the fixture 10. The force application structure is used for applying acting force to the workpiece to be tested so as to perform tension test on the workpiece to be tested. Because the clamping mechanism 10 can rotate in a vertical plane relative to the supporting structure 20, the position of the clamping mechanism 10 relative to the supporting structure 20 can be adjusted according to actual needs, so that the position of a workpiece to be tested can be conveniently adjusted, the operation is convenient, and the time and the labor are saved. The locking structure is used to lock the fixture 10 to the support structure 20. After the clamping mechanism 10 is adjusted to a proper position, the clamping mechanism 10 and the supporting structure 20 can be locked through the locking structure, so that the clamping mechanism 10 is fixed at a certain position relative to the supporting structure 20, and the force application structure is convenient to perform tension test on a workpiece to be tested.

Compare in the fixed technique in relative position between tensile test anchor clamps and the supporting seat, among the technical scheme of this application, fixture 10 is rotatable for bearing structure 20, and fixture 10 drives the work piece that awaits measuring and rotates to can conveniently adjust the position of the work piece that awaits measuring, the operation of being convenient for, labour saving and time saving.

According to the technical scheme, the tension test device can be used for conveniently, quickly and efficiently testing the tension of the workpiece to be tested.

The embodiment of the utility model provides an in, the tensile test device still includes the pivotal axis, and fixture 10 passes through pivotal axis and bearing structure 20 pivotal connection, realizes fixture 10 for the rotatable purpose of bearing structure 20.

As shown in fig. 1 to 3, in the embodiment of the present invention, the support structure 20 is provided with the elongated hole 21, the elongated hole 21 is located on one side of the pivot point between the support structure 20 and the clamping mechanism 10, the elongated hole 21 extends around the pivot point, the clamping mechanism 10 is provided with the first threaded hole, the first threaded hole corresponds to the elongated hole 21, the locking structure includes a locking member slidably engaged with the elongated hole 21, and one end of the locking member is threaded into the first threaded hole after penetrating through the elongated hole 21.

In the above arrangement, one end of the locking member passes through the elongated hole 21 and is then threadedly engaged with the first threaded hole, thereby achieving the purpose of locking the clamping mechanism 10 to the support structure 20. The elongated hole 21 has a guiding effect on the rotation of the fixture 10 relative to the support structure 20, and the fixture 10 rotates relative to the support structure 20 along the elongated hole 21.

Preferably, the elongated hole 21 is an arc-shaped hole.

In the embodiment of the present invention, the locking member is a screw, and the elongated hole 21 is an arc hole.

Of course, in the alternative embodiment of the present application, the following may also be provided according to actual needs: be equipped with rectangular hole 21 on bearing structure 20, be equipped with the installation through-hole on fixture 10, the installation through-hole corresponds the setting with rectangular hole 21, and locking structure includes retaining member and anticreep piece, and the one end of retaining member is connected with the anticreep piece after passing rectangular hole 21 and installation through-hole. Preferably, the locking member is a screw and the anti-slip member is a nut.

Of course, in the alternative embodiment of the present application, the first threaded hole may be disposed on the supporting structure 20, the elongated hole 21 is disposed on the clamping mechanism 10, and one end of the locking member penetrates through the elongated hole 21 and is then threadedly connected to the first threaded hole, so as to achieve the purpose of locking the clamping mechanism 10 on the supporting structure 20.

Of course, in the alternative embodiment of the present application, the elongated holes 21 may be replaced by a plurality of circular through holes arranged along the arc at intervals according to actual needs.

As shown in fig. 1, in the embodiment of the present invention, the tensile testing apparatus includes two supporting structures 20, and along the preset direction, the two supporting structures 20 are respectively disposed on two opposite sides of the clamping mechanism 10, and the two supporting structures 20 are both connected with the clamping mechanism 10.

In the above arrangement, both support structures 20 are used to mount and support the fixture 10. The two support structures 20 work together to support the clamping mechanism 10 more stably.

Preferably, the support structure 20 is a plate structure.

Specifically, in the embodiment of the present invention, the upper portion of each supporting structure 20 is pivotally connected to the clamping mechanism 10 through a movable pin. Each support structure 20 is provided with an arc-shaped sliding groove (i.e., a strip hole 21) with a central angle of 45 degrees, the movement track of the clamping mechanism 10 is limited in the arc-shaped sliding groove, and when the clamping mechanism 10 moves to the lowest position of the arc-shaped sliding groove, the clamping mechanism 10 is just in the horizontal position, so as to conveniently install the workpiece to be tested. The angle of the central angle of the elongated hole 21 determines the angle of rotation of the fixture 10 relative to the support structure 20, although in alternative embodiments of the present application, the central angle of the elongated hole 21 may be set to other angular values, such as 60 °, 90 °, 120 °, and the like.

As shown in fig. 1, fig. 3 and fig. 4, in the embodiment of the present invention, the tensile testing apparatus further includes a base 30, the supporting structure 20 is disposed on the base 30, and the supporting structure 20 is connected to the base 30.

In the above arrangement, the base 30 is used to mount the support structure 20. The base 30 supports both the support structure 20 and the fixture 10. Both support structures 20 are mounted on a base 30. The base 30 and the fixture 10 are located at opposite ends of the support structure 20, respectively.

The embodiment of the utility model provides an in, be equipped with third screw hole 31 on the base 30, be equipped with the fourth screw hole on the bearing structure 20, base 30 passes through the screw and is connected with bearing structure 20. The number of the third threaded holes 31 is four, and two fourth threaded holes are formed in each support structure 20. Preferably, the base 30 is connected to one support structure 20 by two countersunk head screws, and the base 30 is connected to two support structures 20 by four countersunk head screws, respectively.

The embodiment of the utility model provides an in, be equipped with on the base 30 be used for with treat the mounting hole 32 that the installing component is connected, whole tensile test device is fixed on treating the installing component through the mounting hole 32 that sets up on the base 30.

As shown in fig. 1 and 2, in the embodiment of the present invention, the clamping mechanism 10 includes a clamping body 12 and a clamping member 13, the clamping body 12 is connected to the supporting structure 20 and is rotatably disposed relative to the supporting structure 20; the clamping piece 13 is arranged on the clamping body 12, the clamping piece 13 and the clamping body 12 enclose a clamping cavity, and the clamping piece 13 is movably arranged relative to the clamping body 12 so as to adjust the size of the clamping cavity.

In the above arrangement, the clamping member 13 and the clamping body 12 enclose a clamping cavity, and the workpiece to be tested is clamped between the clamping member 13 and the clamping body 12. The clamping body 12 is rotatable relative to the support structure 20, and the clamping body 12 drives the clamping member 13 and the workpiece to be tested to rotate together, so that the position of the workpiece to be tested can be conveniently adjusted. The clamping piece 13 is movable relative to the clamping body 12, the size of the clamping cavity can be adjusted by moving the clamping piece 13, the size of the clamping cavity is adjustable, the clamping cavity can be used for clamping workpieces to be tested in different sizes, and the adaptability and the flexibility of the tension testing device are improved.

As shown in fig. 1, in the embodiment of the present invention, the clamping body 12 has a quadrilateral frame structure. The short side of the clamping body 12 is pivotally connected to the support structure 20, and a first threaded hole is provided in the short side of the clamping body 12. The predetermined direction is the same as the extending direction of the long side of the holding body 12. The clamping piece 13 is located between two opposite long edges of the clamping body 12, the clamping piece 13 is arranged on one long edge of the clamping body 12, and a clamping cavity is enclosed between the clamping piece 13 and the other long edge of the clamping body 12.

Preferably, the clamp 13 is a plate structure.

Generally, the number of workpieces to be tested needs to be tested by 3 or more than 3 so as to ensure the testing precision, and in the prior art, a tensile testing tool can only clamp one workpiece to be tested at a time, so that the testing efficiency is low.

As shown in fig. 1, in an embodiment of the present invention, the clamping mechanism 10 includes a plurality of clamping members 13, and the plurality of clamping members 13 are disposed on the clamping body 12 at intervals along a predetermined direction.

In the above arrangement, the plurality of clamping pieces 13 are respectively matched with the clamping body 12, so that the purpose of simultaneously clamping a plurality of workpieces to be tested can be realized, and the tensile test device can simultaneously perform tensile test on the plurality of workpieces to be tested, thereby improving the test efficiency.

As shown in fig. 1 and 4, in the embodiment of the present invention, the number of the clamping members 13 is three.

Of course, in alternative embodiments of the present application, the number of the clamping members 13 may be one, two or at least four according to actual needs.

As shown in fig. 1 to fig. 4, in the embodiment of the present invention, the clamping mechanism 10 further includes an adjusting structure 14, the adjusting structure 14 is connected to the clamping body 12, the clamping member 13 is connected to the adjusting structure 14, and the adjusting structure 14 is movably disposed relative to the clamping body 12 to drive the clamping member 13 to move.

In the above arrangement, the adjusting structure 14 is movable relative to the clamping body 12, and the adjusting structure 14 drives the clamping member 13 to move, so as to adjust the size of the clamping cavity.

As shown in fig. 1, in the embodiment of the present invention, the adjusting structure 14 is connected to one long side of the holding body 12.

As shown in fig. 2 to 4, in the embodiment of the present invention, the adjusting structure 14 includes an adjusting bolt 15, a second threaded hole is provided on the clamping body 12, the adjusting bolt 15 is connected with the second threaded hole by a thread, and the clamping member 13 is disposed at one end of the adjusting bolt 15.

In the above arrangement, by screwing the adjusting bolt 15, the rotation motion between the adjusting bolt 15 and the second threaded hole can be converted into the movement motion of the adjusting bolt 15 relative to the clamping body 12, and the adjusting bolt 15 drives the clamping piece 13 to move.

As shown in fig. 2 to 4, in the embodiment of the present invention, the adjusting structure 14 further includes a handle 16 connected to the adjusting bolt 15, the handle 16 is located at an end of the adjusting bolt 15 away from the clamping member 13, and the adjusting bolt 15 can be screwed conveniently and quickly by the handle 16, so as to facilitate the operation.

Specifically, as shown in fig. 2, in the embodiment of the utility model, the work piece that awaits measuring is placed between holder 13 and clamping body 12, holder 13 with await measuring the work piece contact, realize adjusting bolt 15 through rotatory handle 16 and feed to give the work piece clamp force that awaits measuring, will await measuring the work piece clamp tightly between holder 13 and clamping body 12, finally realize the installation and the fastening to the work piece that awaits measuring.

As shown in fig. 1 and 4, in the embodiment of the present invention, the clamping mechanism 10 includes a plurality of clamping members 13 and a plurality of adjusting structures 14, and the plurality of clamping members 13 and the plurality of adjusting structures 14 are disposed in a one-to-one correspondence.

Among the above-mentioned setting, a plurality of holders 13 and a plurality of adjustment structure 14 one-to-one set up, can adjust a plurality of adjustment structure 14 respectively according to actual need to respectively adjust a plurality of holders 13's removal, set up like this, can improve tensile testing arrangement's flexibility and adaptability.

In the prior art, an insertion and extraction force testing machine is mostly used for providing tensile force for tensile force testing, and when the insertion and extraction force testing machine is used for tensile force testing, the tensile force output provided by the insertion and extraction force testing machine is not stable enough.

The embodiment of the utility model provides an in, the tensile test device is still including being used for with the couple that awaits measuring the work piece and be connected, and application of force structure includes the weight, and the couple is used for hanging the weight to carry out the tensile test to the work piece that awaits measuring.

In the above-mentioned setting, with the couple install to the back that awaits measuring on the work piece, can hang the weight on the couple, utilize the weight to carry out the tensile test to the work piece that awaits measuring. The weight is used for replacing the insertion and extraction force testing machine to provide the needed tensile force, and the weight of the weight is fixed and kept constant, so that stable tensile force output can be provided.

The utility model discloses an in the embodiment, the tensile test device still includes the sucking disc of being connected with the couple, and the sucking disc can adsorb on the examination work piece that awaits measuring, and the couple passes through the sucking disc and installs to the examination work piece that awaits measuring on.

Specifically, in the embodiment of the utility model, in the experimentation, the tensile test device once can 3 examination awaiting measuring work pieces of clamping, the examination awaiting measuring work piece clamping is accomplished the back, rotates centre gripping body 12 and then can make the front of examining the measuring work piece of awaiting measuring perpendicularly down, and the sucking disc is inhaled after the surface of examining the measuring work piece of awaiting measuring, uses the weight to replace the plug power testing machine and provides required pulling force, and the weight of weight is fixed and keep invariable, consequently can provide stable pulling force output.

It should be noted that, in the technical scheme of this application, quantity and specification of weight can be according to the work piece that awaits measuring experimental pulling force requirement and dispose.

The embodiment of the utility model provides an in, the tensile test device has following advantage:

1. a plurality of workpieces to be tested can be tested at one time, and the testing efficiency can be improved.

2. The weight is used for replacing the insertion and extraction force testing machine, and the test is more convenient.

3. Aiming at the same workpiece to be tested, the positions of the weight test points are only required to be adjusted, different test points can be tested without disassembling and installing the positions of the tension test clamps, and the test efficiency is improved.

4. The weight of the weight keeps invariable, can export more stable pulling force, improves the accuracy of test result.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the clamping cavity of the clamping mechanism is used for clamping a workpiece to be tested. The support structure is used for mounting and supporting the clamping mechanism. The force application structure is used for applying acting force to the workpiece to be tested so as to perform tension test on the workpiece to be tested. Because fixture is rotatable in vertical plane for bearing structure, consequently, according to actual need, can adjust fixture for bearing structure's position to can conveniently adjust the position of the work piece that awaits measuring, the operation of being convenient for, labour saving and time saving. The locking structure is used for locking the clamping mechanism on the supporting structure. After the clamping mechanism is adjusted to a proper position, the clamping mechanism and the supporting structure can be locked through the locking structure, so that the clamping mechanism is fixed at a certain position relative to the supporting structure, and the force application structure is convenient to perform tension test on a workpiece to be tested.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tensile testing apparatus, comprising:

the clamping mechanism (10) is provided with a clamping cavity for clamping a workpiece to be tested;

a support structure (20) pivotally connected to the gripper mechanism (10) such that the gripper mechanism (10) is rotatably arranged in a vertical plane relative to the support structure (20);

the force application structure is used for applying acting force to the workpiece to be tested so as to test the tension of the workpiece to be tested; and

the locking structure is connected with or matched with the clamping mechanism (10), the locking structure is connected with or matched with the supporting structure (20), and the locking structure is used for locking the clamping mechanism (10) on the supporting structure (20).

2. The tension testing device according to claim 1, wherein the supporting structure (20) is provided with a long hole (21), the long hole (21) is located on one side of a pivot point between the supporting structure (20) and the clamping mechanism (10), the long hole (21) extends around the pivot point, the clamping mechanism (10) is provided with a first threaded hole, the first threaded hole is arranged corresponding to the long hole (21), the locking structure comprises a locking member in sliding fit with the long hole (21), and one end of the locking member penetrates through the long hole (21) and is in threaded connection with the first threaded hole.

3. The tension testing device according to claim 1, wherein the supporting structure (20) is provided with a strip hole (21), the clamping mechanism (10) is provided with a mounting through hole, the mounting through hole is arranged corresponding to the strip hole (21), the locking structure comprises a locking member and an anti-falling member, and one end of the locking member passes through the strip hole (21) and the mounting through hole and then is connected with the anti-falling member.

4. The tensile testing apparatus of any one of claims 1 to 3 wherein the clamping mechanism (10) comprises:

a clamping body (12) connected to the support structure (20) and rotatably arranged with respect to the support structure (20);

the clamping piece (13) is arranged on the clamping body (12), the clamping piece (13) and the clamping body (12) enclose the clamping cavity, and the clamping piece (13) is movably arranged relative to the clamping body (12) so as to adjust the size of the clamping cavity.

5. The tensile testing device of claim 4, wherein the clamping mechanism (10) comprises a plurality of clamping members (13), and the plurality of clamping members (13) are arranged on the clamping body (12) at intervals along a preset direction.

6. The tensile testing apparatus of claim 4, wherein the clamping mechanism (10) further comprises an adjusting structure (14), the adjusting structure (14) is connected with the clamping body (12), the clamping member (13) is connected with the adjusting structure (14), and the adjusting structure (14) is movably disposed relative to the clamping body (12) to move the clamping member (13).

7. The tensile testing apparatus of claim 6,

the adjusting structure (14) comprises an adjusting bolt (15), a second threaded hole is formed in the clamping body (12), the adjusting bolt (15) is in threaded connection with the second threaded hole, and the clamping piece (13) is arranged at one end of the adjusting bolt (15); and/or the presence of a gas in the gas,

the clamping mechanism (10) comprises a plurality of clamping pieces (13) and a plurality of adjusting structures (14), and the plurality of clamping pieces (13) and the plurality of adjusting structures (14) are arranged in a one-to-one correspondence mode.

8. The tensile testing apparatus according to any one of claims 1 to 3, wherein the tensile testing apparatus comprises two support structures (20), and the two support structures (20) are respectively arranged on two opposite sides of the clamping mechanism (10) along a preset direction, and the two support structures (20) are connected with the clamping mechanism (10).

9. The tension testing device according to any one of claims 1 to 3, further comprising a hook for connecting with the workpiece to be tested, wherein the force application structure comprises a weight, and the hook is used for hanging the weight so as to perform tension testing on the workpiece to be tested.

10. The tensile testing apparatus of any one of claims 1 to 3,

the tensile testing device further comprises a base (30), the supporting structure (20) is arranged on the base (30), and the supporting structure (20) is connected with the base (30); and/or the presence of a gas in the gas,

the tensile testing device further comprises a pivot shaft, and the clamping mechanism (10) is pivotally connected with the supporting structure (20) through the pivot shaft.